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From: Daniel Ng <daniel.ng1234-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: How to use IB netlink infrastructure
Date: Fri, 27 Apr 2012 05:25:46 +0000 (UTC)	[thread overview]
Message-ID: <loom.20120427T065509-752@post.gmane.org> (raw)
In-Reply-To: 1828884A29C6694DAF28B7E6B8A82373469D7D42@ORSMSX101.amr.corp.intel.com

Hefty, Sean <sean.hefty@...> writes:
>> What is the actual entry point in the IB kernel code
>> that results in a call to get_user_pages()?
> 
> I believe the memory registration calls will result in this being called.  
>Look for ib_uverbs_reg_mr.

Thanks for your helpful suggestions Sean.

I've noticed this article on LWN.net:

http://lwn.net/Articles/133649/

It was written in 2005 and points out some shortcomings with using
get_user_pages() for RDMA. Do you know if these shortcomings have been addressed
since 2005?

If not, is there perhaps another way RDMA has been implemented in the kernel?

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      reply	other threads:[~2012-04-27  5:25 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-18  7:18 How to use IB netlink infrastructure Daniel Ng
2012-04-22 23:54 ` Daniel Ng
     [not found]   ` <loom.20120423T015347-107-eS7Uydv5nfjZ+VzJOa5vwg@public.gmane.org>
2012-04-23 16:26     ` Hefty, Sean
2012-04-27  5:25       ` Daniel Ng [this message]

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